Portable garbage disposal machine



June 7, 1955 H. PLUMMER 2,710,035

PORTABLE GARBAGE DISPOSAL MACHINE Filed May 26, 1954 2 Sheets-Sheet 1 INV EN TOR.

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June 7, 1955 H. PLUMMER PORTABLE GARBAGE DISPOSAL MACHINE 2 Sheets-Sheet2 Filed May 26. 1954 INVENTOR.

United States Patent 2,710,035 PORTABLE GARBAGE DISPOSAL MACHINE HaroldPlummer, La Jolla, Calif. 7 Application May 26, 1954, Serial No. 432,504

9 Claims. (Cl. 146192) v This invention relates to a portable form of.electrical garbage disposal machine, which may be used without anychange being made to the existing plumbing and may be removed at will bythe owner.' The machine is so constructed, that it may also be used forthe shredding, slicing and mincing of various food products, used inmaking salads, cakes and other food products. The cutting unit may bequickly disconnected and the remaining portion can then be used forvariouscleaning and polishing operations, such as dirty kitchenutensils, shoe cleaning or automobile cleaning and polishing; and mayalso be used for drilling, grinding and sanding, when specialattachments are furnished.

Other purposes will appear from time to time in the course of thespecification and claims.

My invention is illustrated in the accompanying drawings wherein,

Figure l is a vertical sectional view of the shredding, cutting andmincing unit, connected to a flexible drive shaft and motor.

Figure 2 is a plan view on reduced scale of this same unit.

Figure 3 is a bottom view on a reduced scale of the shredding unit,taken on line 33 of Figure l, the arrow head indicating the direction ofrotation.

Figure 4 is a cross sectional view on reduced scale taken through line4--4 of Figure 1, showing the propeller and material flow guide andcutting plate, the arrow head indicating direction of rotation.

Figure 5 is a cross sectional view on reduced scale on line 55 of Figure1, showing the upper layer of razor blades and clamp plates and alsoshows the square drive bushing seal and driving pin.

Figure 6 is a sectional view on line 66 of Figure l, to show moreclearly the flow and cutting action, in the first three cutting stages.

Figure 7 shows the machine with the cutting assembly removed and theshaft connected to a polishing wheel.

Figure 8 shows the machine with an electric motor and speed reducinggear box, direct connected to the garbage disposal or mincing unit.

Figure 9 is a side view on reduced scale of a lower clamp plate.

Figure 10 is a plan view on reduced scale of a lower clamp plate.

Figure 11 is a plan view on reduced scale of an upper clamp plate.

Referring to the drawings, 10 is an electric motor with switch 11 andflexible cable 12 containing current supply wires. Motor 10 is suspendedfrom the wall, or a body belt, by means of bracket 13 and drives aflexible shaft 14, which has a squared end 15, at the end of theinternal drive shaft, engaging with a slot or squared hole in theintermediate drive shaft 16. Intermediate drive shaft 16 rotates incover 17 and is held in place by means of the thrust collar 18 andthrust collar cap 19. A square tubular coupling 20 is used to connectthe cutting unit shaft 21 to the intermediate drive shaft 16. Shaft 21rotates in a stationary cylindrical housing 22, which has a double sealball bearing 23 for shaft support. A rubber seal .24, is used to preventany leakage of water from the lower cutting chamber 25, to upper drychamber 26 and also to prevent any possible leakage of water to ballbearing 23. On shaft 21, a squared or splined drive bushing 30 ismounted, which is slotted and driven by means of pin 31, a part of shaft21. Drive bushing 30 has a squared or splined section 32, which drivesupper razor blade clamp plates 33 and lower clamp plates 34. Each lowerclamp plate 34 locates and drives razor blades 35 by means of drive pinsor keys 36 two of which pass through each blade. ,End of drive bushing30 is threaded and a cutting propeller 37 is tapped and screwed on tosaid threaded end as a nut, to keep all razor blades 35 and clamp plates33 .and 34, secure and in place, the direction of the threadbeing suchthat it is self locking. Immediately below the cutting propeller 37there is a material flow guide plate38 which has cutting edges on theunderside and is station ary, being secured to housing 22 by screws 39."Guide plate 38 has a bushing 40, which acts as a bearing for the lowerend of the cutting assembly. In the boss of the cutting propeller 37,there are four driving pins 41, which drive the small center shreddingplate 42 and also the main shredding plate 43. The purpose of the centershredding plate 42, is to drive the material from the center out, intothe main shredding plate, which is provided with several projectingcutting receptacles 44. Fillister head screw 45 is used to secure thewhole shredding and cutting assembly, to the cutting unit drive shaft21, the shaft being tapped in the center to receive screw 45. On theperipheral face of housing 22, a ring 46 of plasticmaterial, is cementedto form a piston or plunger, which slides in a cylinder or garbagecontainer cup 47. To use the machine the garbage or other material to beground is placed in the bottom of cup 47 and motor 10 started. Housing22 and its associated shredding and cutting mechanism is then loweredinto container 47, the cutters 44 shredding the material and, inassociation with flow plate 38 and cutting propeller 37, forcing thematerial from chamber 25, through the cutting elements and dischargeholes 48 into discharge chamber .49, formed by external duct 50, whichcarries the material downward through the drying frame 51 into the sinkdrain. Stop pins 27 engage one or more of the spaced apart wirescomposing frame 51 and are used to prevent rotation of garbage containercup 47.

When the machine is required for such purposes as cleaning and polishingor sanding and grinding, cover 17 is removed from the shredding andcutting assembly by giving said cover a partial turn so that the headsof shouldered studs 52 may pass through an enlargement in slots 53formed in cover 17. Motor 10 and drive shafts 14 and 16 are then readyto receive an adaptor bushing 54, held in place by screw 55, a rubberdisc 56 being also added on which is tied a sheep skin polisher 57. Ifthe machine is to be used for sanding, sand paper may be clamped inplace against disc 56 by means of washer 58. Or an emery wheel may beused in place of disc 56 for grinding purposes, or a drill chuck may beadded for drilling purposes.

Having described my invention, what I claim as new and desire to secureby Letters Patent is:

l. A garbage disposal machine comprising; a garbage container having acylindrical interior wall; a plunger slidable along said wall; a rotaryshaft supported by said plunger and coaxial therewith; means forconnecting the top of said shaft to an electric motor; a plurality ofrazor blades connected to said shaft for rotation therewith; a platesecured to said plunger below said blades,

Patented June 7, 1955.

said plate having a plurality of channels therethrough arranged to cutand convey shredded garbage up toward said blades; and a plurality ofshredding blades secured to the lower end of said shaft arranged toshred the top portion of the garbage and direct it up into saidchannels.

2. A machine as claimed in claim 1, in which the top end of said shaftis provided with a sleeve having a socket adapted to receive the lowerend of an intermediate shaft; and means connecting said intermediateshaft to an electric motor.

3. A machine as claimed in claim 1, in which the intermediate portion ofsaid shaft is provided with a plurality of spaced apart plates forreceiving the razor blades therebetween and means projecting from saidplates arranged to hold and drive the blades.

4. A machine as claimed in claim 1, in which the top portion of saidplunger is provided with a depending thin cylindrical wall partlysurrounding and spaced outwardly from said garbage container to providea duet to convey finely cut garbage leaving the top of said garbagecontainer downwardly.

5. A machine as claimed in claim 1, in which the top end of said plungeris provided with a cover; an intermediate shaft journaled in said cover;a flexible shaft having one end detachably connected to the top of saidelectric motor.

6. A machine as claimed in claim 1, in which said plunger is used formanual force feeding of the garbage to an outer discharge duct.

7. A machine as claimed in claim 1, in which a cutting propeller ismounted above said plate to cut and mechanically force feed the garbageto the razor blades.

8. A machine as claimed in claim 1, in which a cutting propeller isrnounted above said plate to first suck and then mechanically force feedthe garbage from the container to an outer discharge duct.

9. A machine as claimed in claim 5, in which said cover is readilydetachable from the plunger.

References Cited in the file of this patent UNITED STATES PATENTS1,422,391 Trust et a1. July 11, 1922 2,246,054 Marty June 17, 19412,501,524 Jones Mar. 21, 1950 2,655,354 Murray Oct. 13, 1953 2,666,281Tocci-Guilbert Jan. 19, 1954 FOREIGN PATENTS 752,176 France July 10,1933 275,121 Switzerland July 16, 1951

